Attachment for vapor-heating systems.



ATTACHMENT FOR VAFOR HEATING SYSTEMS. APPLICATION FILED IuLYI1,I9I6.

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WALTER M. MANNING lAND lOSCAR iacAivsoN, oroivrAI-IA, NEBRASKA.

ATTAHMENT FOR VAPOR-HEATING SYSTEMS.,i

- mg Systems; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains Ato make and use the same.

This invention relates to new and useful improvements in attachment-s for j vapor heating systems and the principal object' of the invention is to provide a device which rwill prevent the system from becoming airvbound, by the closing of the valve to the air vent before the air has been completely eX- pelled from the heatingplant.

Another object of the invention is to provide a device which will automatically open the valve after the float returns to its normal position and the system has been freed of the air.

A still further object of the invention is to provide a device which is automatic in its operation and which is so arranged that the parts are all carried by a suitable cover plate which may be readily removed in order to make repairs to the device.v Y

With these and other objects in view, the invention consists'in the novel-combination and arrangement of parts which will be fully set forth in the following specication and accompanyingdrawing, in which Figure 1 is a vertical sectional view through the apparatus.V

Fig. 2 is a horizontal sectional view of the device taken on line 2-'-2,of-Fig. 1 and Fig. 3 is a sectional view on line 3 3 of Fig. 1.

Referring now to the drawing the numeral l designates the main body of the device consistingof ahollow cylindrical shell 2 provided at its lower end with a dome shaped closure 3 having a central opening 4f formed therein which is surrounded bythe collar 5 which projects downwardly therefrom and is preferably internally screw threaded as illustrated to form a pipe connection. The upper end of the device is provided with the oifset wall 6 forming the chamber 7 as clearly shown in the drawing. Formed 1n the cylinder 2 near its upper end and at aA l Specification of Letters Patent.

Patented-Apure, 191'?.

Application med July 11, 1916. seriai No. 108.628.

which thelwall 6 is formed is a boss 9 having an internally-screw threaded opening 8 which is adapted to receive the end of the return pipe `of the heating system. A suitable supporting yoke 10 is formed on the interior of the shell' or body 2 immediately beneath the lower side of the opening 8 to form a stop, the use of which will appear as the description proceeds. A suitable flange 11 is formed at the upper end of the cylinder 2 and-at the upper edge of the wall 6 and this iiange is provided with openings for the reception of suitable attaching bolts 12 by means of whichI the coverplate to be more fullyj hereinafter described is attached tothe device. v

,j The coverplate of the device is designated by the numeral 13 andfisfprovidedat one side with the longitudinally extending top 14 which covers the upper side of the chamber 7 and formedv intermediate the ends of the plate'is a threaded opening 15 into which the end of the air v'pipe is threaded. A suitable hollot stem 16 is formed integrally with the cover plate 13 and arranged in axial alinement with the cylinder .2 and the upper endy of this stem is closed as at 17 while the lower end-is left open and projects into the cylinder as clearly shown in the drawing. The stem above referred to is adapted to form a guide'for the stem of the float which will be more fully hereinafter described. I

Attached to they under side of the cover plate and depending therefromis al suitable yoke 18 which extends into thel chamber 7 as illustrated' in Figs. 1 and Sand this yoke formsapivotal support forthe valve controlling lever designated generally by ythe numeral 19. This valve controlling lever comprising the trough 20 is4 provided inter- -mediate its ends with" the depending ear 24:

which is apertured to receive the pivot pin 25 by means of which the lever is pivotally mounted. A suitable offset stem 26 is formed at vone end of the lever and' when in the positionshown in the full lines in Fig. 1 lthis end of the stemrests upon a stop 10 which limits its downward movement. l As shown, this stem also projects through'the slot in the stem on'the float so that when the float moves into its uppermost or lowermost positions the stem will rock the lever 20. A valve 27 is mounted on the upper end of the valve stem 28 the lower end of which is pivoted as shown in the drawingto the body 20 of the lever 19 adjacent the offset portion and this valve is adapted to cooperate with the valve seat 29 inclosing the air outlet port 15 as clearly illustrated in the drawing. In order to hold the lever in either of its positions until it is moved by the float a ball 30 is positioned within the trough 2O and when the ball is in the position shown in the full lines in Fig. 1 it will be seen that the valve will be opened and when in the position shown in the dotted lines illustrated in the same figure it will be apparent that the valve will be closed. Suitable guards 31 are formed integrally with the under side of the plate 14 and are arranged to prevent the ball 30 from jumping out of the trough.

In order to control the movements of the lever 19 the float designated generally by the numeral 32 is provided which comprises a hollow shell 33 formed of any suitable meta-l having its lower end open as at 34, the upper end of this shell is provided with an upstanding stem 35 having the longitudinal slot 36 extending therethrough through which the arm 26 of the lever 19 extends. In order to center the ioat within the chamber or cylinder 2 suitable guides 37 are provided which engage the inner faces of the walls of the chamber and it will thus be seen that the driving of the stem 35 into the hollow stem 1G together with the contact of the guides 37 against the wall of the cylinder 2 will'keep the float in the proper position at all times. In order to enable the float to partially fill with the inflowing water, a suitable valve 38 is attached to the side thereof and communicates with the interior of said float at a point a distance from the bottom equal to substantially one-third of the total length of the float. It will thus be seen that the inflowing water will lill the float to the level of the valve and then any further rising of water within the chamber or cylinder will cause said float to move upwardly thereby bringing the lower end of the slot 36 against the under side of the lever 26 to cause the lever 19 to rock and thereby close the valve 27. As the water runs back to the boiler it will be apparent that the float will gradually lower until the upper end of the slot 36 engages the arm 2G and causes the lever 19 to rock into the full line position shown in Fig. 1 at which time the air valve will be opened.

It will be apparent from the foregoing that in use the water backing up into the receiver or cylinder 2 from the boiler will partially fill the float 32 thereby causing the same to rise and closing the air valve. It will thus be seen that the pressure within the system will be equal at all points and the .water may then flow back to the boiler.

Upon the emptying of the cylinder 2 it will be seen that the float will descend thereby operating the lever 19 and moving the airA valve to open position thus allowing any air within the system to escape.

While in the. foregoing there has been shown and described the preferred embodiment of this invention, it is to be understood that such changes may be made in the combination and arrangement of parts as will fall within the spirit and scope of the appended claim.

What is claimed is In a device of the class described, a tubular body having an inlet opening at its lower end and an outlet opening adjacent its upper end, an oset chamber formed integrally withthe body adjacent its upper end and at a point diametrically opposite the outlet opening, a cover fitted on the body and offset chamber to close the same, said cover having an air outlet port formed at a point substantially centrally thereof, a pair of depending brackets attached to the underside of the cover, a stem guide formed integrally with the cover adjacent the air outlet opening, a valve seat for said air outlet opening, guards formed on the under side and depending from the cover in spaced relation, said guards being positioned within the offset chamber, a trough shaped lever pivoted between the depending brackets, a ball weight positioned in said trough shaped 95 lever, the guards preventing said weight from pulling out of said trough shaped lever, a valve pivoted to said lever at one end and adapted to coperate with the valve seat in the air outlet valve to control the 100 flowof air through the outlet, a downwardly offset arm formed on the end of the lever to which the valve is pivoted, a stop formed on the interior of the body to limit the downward movement of the end of the offset arm, 105 a float within the body, and a slotted stem on the upper end of said float, the slot in the stem being adapted to accommodate the offset arm on the lever whereby the float may move vertically without moving the lever 110 until such limits of movement of said float are reached, the lever acting to suspend the float within the body when the end of the offset portion engages the stop.

In testimony whereof we aflix our signa- 115 tures in presence of two witnesses.

WV. M. MANNING. OSCAR B. GANSGN.

Witnesses:

GUS Gr. Baci-1ER, J r., MABLE SWIFT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

